Ballance, R., & Sinclair, S. (1983). Collapse and survival: Industry strategies in a changing world. অষষবহ ্ টহরিহ.
Chicago-čujuhus (17. p.)Ballance, Robert, juo Stuart Sinclair. Collapse and Survival: Industry Strategies in a Changing World. London: অষষবহ ্ টহরিহ, 1983.
MLA-čujuhus (9. p.)Ballance, Robert, juo Stuart Sinclair. Collapse and Survival: Industry Strategies in a Changing World. অষষবহ ্ টহরিহ, 1983.
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